People who increase the amount of red meat in their diet may be at a higher risk of developing type 2 diabetes, according to a new study of more than 149,000 Americans.

The study researchers found that people who increased their red-meat intake by half a serving per day during a four-year period had a 48-percent higher risk of developing type 2 diabetes in the next four years compared with people who made no change in their red-meat intake.